English verb conjugation COULD WATER-SKI

Regular verb: water-ski - water-skied - water-skied

Affirmation

Simple form

I could water-ski
you could water-ski
he could water-ski
we could water-ski
you could water-ski
they could water-ski

V-ing form

I could be water-skiing
you could be water-skiing
he could be water-skiing
we could be water-skiing
you could be water-skiing
they could be water-skiing

Perfect

I could have water-skied
you could have water-skied
he could have water-skied
we could have water-skied
you could have water-skied
they could have water-skied

V-ing perfect

I could have been water-skiing
you could have been water-skiing
he could have been water-skiing
we could have been water-skiing
you could have been water-skiing
they could have been water-skiing

Negation

Simple form

I couldn't water-ski
you couldn't water-ski
he couldn't water-ski
we couldn't water-ski
you couldn't water-ski
they couldn't water-ski

V-ing form

I couldn't be water-skiing
you couldn't be water-skiing
he couldn't be water-skiing
we couldn't be water-skiing
you couldn't be water-skiing
they couldn't be water-skiing

Perfect

I couldn't have water-skied
you couldn't have water-skied
he couldn't have water-skied
we couldn't have water-skied
you couldn't have water-skied
they couldn't have water-skied

V-ing perfect

I couldn't have been water-skiing
you couldn't have been water-skiing
he couldn't have been water-skiing
we couldn't have been water-skiing
you couldn't have been water-skiing
they couldn't have been water-skiing

Interrogative form

Simple form

could I water-ski?
could you water-ski?
could he water-ski?
could we water-ski?
could you water-ski?
could they water-ski?

V-ing form

could I be water-skiing?
could you be water-skiing?
could he be water-skiing?
could we be water-skiing?
could you be water-skiing?
could they be water-skiing?

Perfect

could I have water-skied?
could you have water-skied?
could he have water-skied?
could we have water-skied?
could you have water-skied?
could they have water-skied?

V-ing perfect

could I have been water-skiing?
could you have been water-skiing?
could he have been water-skiing?
could we have been water-skiing?
could you have been water-skiing?
could they have been water-skiing?

Interro-negative form

Simple form

couldn't I water-ski?
couldn't you water-ski?
couldn't he water-ski?
couldn't we water-ski?
couldn't you water-ski?
couldn't they water-ski?

V-ing form

couldn't I be water-skiing?
couldn't you be water-skiing?
couldn't he be water-skiing?
couldn't we be water-skiing?
couldn't you be water-skiing?
couldn't they be water-skiing?

Perfect

couldn't I have water-skied?
couldn't you have water-skied?
couldn't he have water-skied?
couldn't we have water-skied?
couldn't you have water-skied?
couldn't they have water-skied?

V-ing perfect

couldn't I have been water-skiing?
couldn't you have been water-skiing?
couldn't he have been water-skiing?
couldn't we have been water-skiing?
couldn't you have been water-skiing?
couldn't they have been water-skiing?

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